Reader Joe_NoOne writes: Like TV, social media now increasingly entertains us, and even more so than television it amplifies our existing beliefs and habits. It makes us feel more than think, and it comforts more than challenges. The result is a deeply fragmented society, driven by emotions, and radicalized by lack of contact and challenge from outside. This is why Oxford Dictionaries designated "post-truth" as the word of 2016: an adjective "relating to circumstances in which objective facts are less influential in shaping public opinion than emotional appeals." Traditional television still entails some degree of surprise. What you see on television news is still picked by human curators, and even though it must be entertaining to qualify as worthy of expensive production, it is still likely to challenge some of our opinions (emotions, that is). Social media, in contrast, uses algorithms to encourage comfort and complaisance, since its entire business model is built upon maximizing the time users spend inside of it. Who would like to hang around in a place where everyone seems to be negative, mean, and disapproving? The outcome is a proliferation of emotions, a radicalization of those emotions, and a fragmented society. This is way more dangerous for the idea of democracy founded on the notion of informed participation. Now what can be done? Certainly the explanation for Trump's rise cannot be reduced to a technology- or media-centered argument. The phenomenon is rooted in more than that; media or technology cannot create; they can merely twist, divert, or disrupt. Without the growing inequality, shrinking middle class, jobs threatened by globalization, etc. there would be no Trump or Berlusconi or Brexit. But we need to stop thinking that any evolution of technology is natural and inevitable and therefore good. For one thing, we need more text than videos in order to remain rational animals. Typography, as Postman describes, is in essence much more capable of communicating complex messages that provoke thinking. This means we should write and read more, link more often, and watch less television and fewer videos -- and spend less time on Facebook, Instagram, and YouTube.